Synonymy Giesbrecht (1902) erroneously identified an oncaeid copepod of the notopus-type from the Antarctic as "notopus Giesbrecht 1891" (which was the only species of the group described at that time). Later on, Heron (1977) worked on the notopus-type oncaeids in the Antarctic and described several new species within this group. One of these was described as Oncaea prolata, which she synonymized with Giesbrecht´s 1902 species.[details]